no!!!!! holes in semiconductor have no mass!
the conventional way to represent holes as positively charged so there should be a question in our mind that they should have some mass,as proton, the only positively charged particle have mass,but it hasn't.actually the electrons are carrying charge in everywhere,the opposite direction of flow of current considered as the direction of conventional current,
In the semiconductor also only electron carry charges,so the excessiveness of electron defined a semiconductor as n-type,or donor type(due to doping,i.e.,mixing some impurities with the semiconductor and make the semiconductor to make covalent bond with that element).and where the semiconductor is doped with some element of having only three electrons at the valence cell,the covalent bond have a shortage of electrons to complete the total covalent bond,so the semiconductor become available to add another electron to compete the covalent bond.and hence they are called p-type or acceptor type.so hole is nothing but a convention to denote this lack of electron,i.e.,lack of negative charge and it seems like the semiconductor have a positive charge that balance the electron.so the hole must not have any mass.
electron have a mass-1.6*10^-19 kg
There are no free electrons and holes in a pure semiconductor at 0k.
This just means that the semiconductor has extra holes in it. On the order of 10^6 I believe.
increases
Semiconductor in pure form (i.e. without doping) is called intrinsic or i-type semiconductor. The no of charge carrier in this case is determined by the materials itself only and not by the impurities. In an intrinsic semiconductor number of excited free electron is equal to the number of holes.
If an acceptor atom is placed in a pure semiconductor, it will accept one or more electrons from the valence band of the semiconductor. This will permit positive holes in the conduction band to carry electrical current - the overall result is that the material will behave as a p-type semiconductor.
In semiconductor physics, heavy holes and light holes are types of charge carriers with different effective masses. Heavy holes have a larger effective mass and move more slowly than light holes in a semiconductor material. This difference in mobility affects the electronic properties of the material, such as conductivity and energy levels.
There are no free electrons and holes in a pure semiconductor at 0k.
Light holes in semiconductor materials are a type of charge carrier with lower effective mass and energy compared to heavy holes. They have a higher mobility and can contribute to the electrical conductivity of the material. Light holes are important in the band structure of semiconductors and play a role in optical and electronic properties.
no!!!!! holes in semiconductor have no mass! the conventional way to represent holes as positively charged so there should be a question in our mind that they should have some mass,as proton, the only positively charged particle have mass,but it hasn't.actually the electrons are carrying charge in everywhere,the opposite direction of flow of current considered as the direction of conventional current, In the semiconductor also only electron carry charges,so the excessiveness of electron defined a semiconductor as n-type,or donor type(due to doping,i.e.,mixing some impurities with the semiconductor and make the semiconductor to make covalent bond with that element).and where the semiconductor is doped with some element of having only three electrons at the valence cell,the covalent bond have a shortage of electrons to complete the total covalent bond,so the semiconductor become available to add another electron to compete the covalent bond.and hence they are called p-type or acceptor type.so hole is nothing but a convention to denote this lack of electron,i.e.,lack of negative charge and it seems like the semiconductor have a positive charge that balance the electron.so the hole must not have any mass. electron have a mass-1.6*10^-19 kg
The mobility of electrons is always greater than holes. Only the number of electrons and holes would be same in an intrinsic semiconductor.
electrons or holes depending on doping, as in any semiconductor.
Electron holes in semiconductor devices play a crucial role in the flow of electrical current. When an electron moves from one atom to another in a semiconductor material, it leaves behind a hole. These holes can move through the material, allowing for the movement of charge and the creation of an electric current. By controlling the movement of electron holes, semiconductor devices can be used in a variety of electronic applications, such as transistors and diodes.
This just means that the semiconductor has extra holes in it. On the order of 10^6 I believe.
When pentavalent impurity is added to pure semiconductor, it is known as N-Type semiconductor. In N-type semiconductor electrons are majority carriers where as holes are minority carriers. impurities such as Arsenic, antimony are added. When trivalent impurity is added to pure semiconductor, it is know as P-type semiconductor. In P-type semiconductor holes are majority carriers whereas electrons are minority carriers. Impurities such as indium, galium are added.
In semiconductor two charge carriers are present i.e holes and electrons.The current is rate of flow of charges.so in ptype semiconductor the current is the sum of current due to holes and electrons.But current due to holes is more compsred to electrons in ptype.
increases
Doping with Group III elements, which are missing the fourth valence electron, creates "broken bonds" (holes) in the silicon lattice that are free to move. The result is an electrically conductive p-type semiconductor.